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More verbose IPC error handling.

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This commit is contained in:
Michael Mueller
2025-04-17 15:46:05 +02:00
parent d83c382a6c
commit baa37c03d4
1 changed files with 9 additions and 4 deletions
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13
repos/base-tukija/src/lib/base/ipc.cc
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@@ -45,8 +45,10 @@ Rpc_exception_code Genode::ipc_call(Native_capability dst,
log2_max = (uint16_t)log2(rcv_caps);
/* if this happens, the call is bogus and invalid */
if ((log2_max >= sizeof(rcv_caps) * 8))
if ((log2_max >= sizeof(rcv_caps) * 8)) {
error("Bogus IPC call: max order of caps too big");
throw Ipc_error();
}
if ((1UL << log2_max) < rcv_caps)
log2_max ++;
@@ -79,16 +81,19 @@ Rpc_exception_code Genode::ipc_call(Native_capability dst,
/* establish the mapping via a portal traversal */
uint8_t res = Tukija::call(dst.local_name());
if (res != Tukija::NOVA_OK)
if (res != Tukija::NOVA_OK) {
/* If an error occurred, reset word&item count (not done by kernel). */
error("IPC failed. snd_msg_buf: ", reinterpret_cast<const char *>(snd_msg.data()));
utcb.set_msg_word(0);
}
/* track potentially received caps and invalidate unused caps slots */
rcv_window.post_ipc(utcb, manual_rcv_sel);
if (res != Tukija::NOVA_OK)
if (res != Tukija::NOVA_OK) {
error("IPC error code=", res, " sel=", dst, "msg_buf:", reinterpret_cast<const char *>(snd_msg.data()));
return Rpc_exception_code(Rpc_exception_code::INVALID_OBJECT);
}
/* handle malformed reply from a server */
if (utcb.msg_words() < 1)
return Rpc_exception_code(Rpc_exception_code::INVALID_OBJECT);